I had the same exact problem and I was always worried it was going to slip through someones mouth & he was going to hear. Until one day I maned up & brought him to my room and I told him I was so scared I couldn't even look at him & he told me that everything was good that why didnt I use protection lol we've been good since then! :) it all depeneds on the guy. I say tell him! :) g
I had the same situation bt I couldn't tell him and her ended up finding out from someone else. After I told him I was scared to tell him he's been the most supportive throughout my whole pregnancy and I wish I would've been the one to tell him